A Comparison Study of Mechanism: Cu²⁺ Adsorption on Different Adsorbents and Their Surface-Modified Adsorbents

Figure 5

Representative SEM images of different adsorbents. (a) CB (scale bar is 600 nm), (b) OCB (scale bar is 600 nm), (c) bentonite (scale bar is 6 μm), and (d) organic bentonite (scale bar is 6 μm).

(a)

(b)

(c)

(d)